CN103280984A - Cascade connection type current transformer based on single-stage power transformation module - Google Patents
Cascade connection type current transformer based on single-stage power transformation module Download PDFInfo
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Abstract
The invention discloses a cascade connection type current transformer based on a single-stage power transformation module, and provides various main power circuits being formed by cascading a plurality of power transforming modules and a three-phase star-connection, angle-connection and double-star-connection current transformer topological structure consisting of the cascade connection type current transformer based on the single-stage power transformation module. The cascade connection type current transformer has the advantages that a low-pressure-resistance power switch tube can be used for performing high-power rectification and transformation under high voltage; a high-frequency transformer can be used for electrical isolation for circuits; and a power frequency phase-shifting transformer is not needed. A first-stage power transformation circuit is used for finishing alternating current (AC)/direct current (DC) and DC/DC two-stage transformation and has a power factor correction function; a unit power factor can be rectified, the structures of the main power circuits are simplified, the number of switch devices and the circuit loss are reduced, and the working efficiency of the system is improved; the cascade connection type current transformer is small in size, light in weight and low in cost and has important application value in the application fields of high-power electronic transformers and high-power medium-high voltage alternating current-direct current-alternating current frequency transformers.
Description
Technical field
The present invention relates to current transformer, particularly a kind of cascade connection type current transformer based on the single-stage power conversion module.
Background technology
Further improve along with science and technology and the fast development of the modernization of industry with to the requirement of energy savings, the mesohigh electronic power convertor that is applied to large-power occasions is solving the important effect of play more and more on the energy saving problem.In recent years, many level power current transformer (Multilevel Power Converter) application of having succeeded in fields such as high-tension high-power frequency control, active electric filter device, high voltage direct current (HVDC) transmission system and power system reactive power compensations.Many level power current transformer needs to have the electrical isolation function in many practical application in industry, the traditional mode of this electrical isolation function is to adopt the Industrial Frequency Transformer of bulky wiring complexity to finish, and this is restricted its application in many industrial occasions.Thereby, cancel the Industrial Frequency Transformer in traditional high-power many level current transformers circuit, many level current transformers circuit of design no industrial frequency transformer will bring revolutionary change.
At present, high frequency switch power adopts high frequency transformer to finish the isolation transmission of power, and its volume that has is little, in light weight, and series of advantages such as power density height make it occupy absolute leading position in many industrial applications.High frequency switch power adopts two conversion stages to finish the isolated variable of AC-to DC, that is: AC/DC rectification stage and DC/DC high-frequency isolation conversion stage usually.For high performance high frequency switch power, its AC/DC rectification stage also should have power factor emendation function, realizes the unity power factor rectification.High frequency switch power also can adopt a conversion stages to finish the isolated variable of AC-to DC, i.e. so-called single-stage power conversion.Owing to only just can realize the function of the rectification of AC/DC unity power factor and DC/DC isolated variable Two Stages with the one-level conversion, so can greatly simplify circuit structure, simplify control and the modulator approach of circuit, these advantages all make the high frequency switch power of single-stage conversion have good application prospects.The single-stage power conversion module that the present invention relates in the known technology mainly contains following several:
With reference to Fig. 1, first kind of power conversion module comprises that single-phase diode rectifier bridge, switching device, fast recovery diode, boost inductance, isolation high frequency transformer and former limit filter capacitor thereof and output DC hold and load.
With reference to Fig. 3, second kind of power conversion module comprises single-phase diode rectifier bridge, switching device, fast recovery diode, boost inductance, isolation high frequency transformer and former limit filter capacitor thereof and output inductor, output DC appearance and load.
With reference to Fig. 5, the third power conversion module comprises that single-phase diode rectifier bridge, switching device, fast recovery diode, boost inductance, isolation high frequency transformer and former limit filter capacitor thereof, former limit auxiliary induction and output DC hold and load.
With reference to Fig. 7, the 4th kind of power conversion module comprises a single-phase diode rectifier bridge, H bridge, fast recovery diode, boost inductance, isolation high frequency transformer and former limit filter capacitor thereof and output inductor, output DC appearance and a load that is made of switching device.
With reference to Fig. 9, the 5th kind of power conversion module comprises two single-phase diode rectifier bridges, H bridge, fast recovery diode, boost inductance, isolation high frequency transformer and former limit filter capacitor thereof and inductance and output DC appearance and a load that is made of switching device.
High-power cascade full-control type (IGBT) H bridge electronic power convertor is paid close attention to widely and is studied in the application of large-power occasions, and its advantage is can use low withstand voltage electronic power switch device to finish the power conversion of high-power and make the interchange side have higher power factor and less harmonic wave.But the needed switching device of the main circuit topological structure of this kind current transformer is more, loss in the main circuit course of work is bigger, design at the control circuit of all switching devices and control method is also very complicated, and is not easy to realize the function of single-stage power conversion.So how to simplify the topological structure of high-power cascade full-control type (IGBT) H bridge electronic power convertor, reduce the usage quantity of switching device, simplify control and the modulator approach of circuit and can be operated in the high-power application scenario well, this is the current important topic in this area.
Summary of the invention
The objective of the invention is the problems referred to above at the high-power cascade electronic power convertor of present application, a kind of cascade connection type current transformer based on the single-stage power conversion module is provided, this current transformer need not to use the power frequency phase shifting transformer, can use low withstand voltage power switch pipe under high voltage, to finish the high-power high-frequency isolated variable, can use the one-level power conversion circuit to finish AC/DC and DC/DC Two Stages function, and has a power factor emendation function, realize the unity power factor rectification, the topological structure of its main power circuit is simple, the high efficiency of system, volume is little, and is in light weight, and cost is low.
For achieving the above object, a kind of cascade connection type current transformer based on the single-stage power conversion module provided by the invention, comprise main power circuit, described main power circuit comprises the single-stage power conversion module, the single-stage power conversion module adopts first modular unit, described first modular unit comprises the single-phase diode rectifier bridge, switching device, fast recovery diode, boost inductance, isolating high frequency transformer and former limit filter capacitor thereof and output DC holds and load, described main power circuit comprises described first modular unit of high frequency filter and N cascade, wherein second of each described single-phase diode rectifier bridge input links to each other successively with first input of the described single-phase diode rectifier bridge of the next one, remaining two ac input ends of the described single-phase diode rectifier bridge that cascades up, be that second ac input end of first ac input end and N described single-phase diode rectifier bridge of first described single-phase diode rectifier bridge is through the described high frequency filter access AC network of connect, wherein, N is positive integer.
Second kind of cascade connection type current transformer based on the single-stage power conversion module provided by the invention, wherein said single-stage power conversion module is replaced and is adopted second modular unit, described second modular unit to comprise single-phase diode rectifier bridge, switching device, fast recovery diode, boost inductance, isolation high frequency transformer and former limit filter capacitor thereof and output inductor, output DC appearance and load.
The third cascade connection type current transformer based on the single-stage power conversion module provided by the invention, wherein said single-stage power conversion module is replaced and is adopted the 3rd modular unit, described the 3rd modular unit to comprise that single-phase diode rectifier bridge, switching device and fast recovery diode, boost inductance, isolation high frequency transformer and former limit filter capacitor thereof, auxiliary induction and output DC hold and load.
The 4th kind of cascade connection type current transformer based on the single-stage power conversion module provided by the invention, wherein said single-stage power conversion module is replaced and is adopted the four module unit, described four module unit comprises a single-phase diode rectifier bridge, a H bridge that is constituted by switching device, fast recovery diode, boost inductance, isolate high frequency transformer and former limit filter capacitor and output inductor, output DC holds and load, wherein, diode rectifier bridge direct current outlet side exchanges side through two parallel diodes and links to each other with the H bridge of being made of the full-control type device, H bridge DC side parallel one storage capacitor, the H bridge exchanges the side output and is connected to and isolates the former limit of high frequency transformer, isolates the output of high frequency transformer secondary and holds with output DC behind diode full-wave rectifying circuit and output inductor and link to each other with load.
The 5th kind of cascade connection type current transformer based on the single-stage power conversion module provided by the invention, wherein said single-stage power conversion module is replaced and is adopted the 5th modular unit, described the 5th modular unit to comprise two single-phase diode rectifier bridges, H bridge, fast recovery diode, boost inductance, isolation high frequency transformer and former limit filter capacitor thereof and inductance and output DC appearance and a load that is made of switching device.
For achieving the above object, employing provided by the invention connects converter topologies based on the three-phase star of the cascade connection type current transformer formation of single-stage power conversion module, comprise and constitute the three-phase master power circuit that star connects current transformer, described three-phase master power circuit comprises three high frequency filters and three described cascade connection type current transformers based on the single-stage power conversion module, wherein said based on totally six of the remaining ac input ends of the modular unit of N cascade in the cascade connection type current transformer of single-stage power conversion module, N is positive integer, three ac input ends that are positioned at every phase constitute a winding line end, and three ac input ends in addition that are positioned at every phase constitute another winding line end, wherein a winding line end is received on the public neutral point, another winding line end is connected with one of three high frequency filters respectively and is inserted three phase network, constitutes Y-connection.
For achieving the above object, employing provided by the invention is based on the three-phase corner connection converter topologies of the cascade connection type current transformer formation of single-stage power conversion module, comprise the three-phase master power circuit that constitutes the corner connection current transformer, described three-phase master power circuit comprises three high frequency filters and three described cascade connection type current transformers based on the single-stage power conversion module, wherein said based on totally six of the remaining ac input ends of the modular unit of N cascade in the cascade connection type current transformer of single-stage power conversion module, N is positive integer, three ac input ends that are positioned at every phase constitute a winding line end, and three ac input ends in addition that are positioned at every phase constitute another winding line end, wherein a winding line end is received on the public neutral point, another winding line end is connected to next the phase input in the three phase network successively, constitutes dihedral and connects.
For achieving the above object, employing provided by the invention connects converter topologies based on the three-phase double star of the cascade connection type current transformer formation of single-stage power conversion module, comprise and constitute the three-phase master power circuit that double star connects current transformer, described three-phase master power circuit comprises three high frequency filters, six brachium pontis inductance and six described cascade connection type current transformers based on the single-stage power conversion module, six two groups of Y-connections that constitute butt joint based on the cascade connection type current transformer of single-stage power conversion module, namely in every group of Y-connection, described based on totally six of the remaining ac input ends of the modular unit of N cascade in the cascade connection type current transformer of single-stage power conversion module, N is positive integer, three described ac input ends that are positioned at every phase constitute a winding line end, and three the described ac input ends in addition that are positioned at every phase constitute another winding line end, a described winding line end is received on the public neutral point, described another winding line end links to each other with an end of one of described brachium pontis inductance respectively, and the other end that is positioned at two described brachium pontis inductance on every phase brachium pontis docks mutually, and be connected to the three phase network input through one of three described high frequency filters respectively, simultaneously, common neutral in first group of Y-connection links to each other with the two ends of described dc capacitor respectively with the common neutral in second group of Y-connection, constitutes double star and connects.
Advantage and the good effect of the cascade connection type current transformer based on the single-stage power conversion module provided by the invention are: since with traditional single-stage power conversion circuit as a basic module, adopted several power conversion modules formation cascade connection type current transformer that cascades up, finish power rectifier conversion under the high voltage so can use low withstand voltage power switch pipe, and because the electrical isolation in the circuit is to adopt high frequency transformer to realize, therefore do not need to use the power frequency phase shifting transformer huge, heavy, that wiring is complicated.Use the conversion of one-level circuit to finish AC/DC and DC/DC Two Stages, and has a power factor emendation function, realized the unity power factor rectification, simplify the topological structure of main power circuit, significantly reduced the quantity of switching device, and then reduced the loss in the circuit working, improved the operating efficiency of system, volume is little, and is in light weight, and cost is low.Cascade connection type current transformer also has modularized design and the simple advantage of circuit structure, has important use in applications such as high-power electric and electronic transformer, high-power mesohigh ac-dc-ac frequency converters and is worth.
Be elaborated with reference to accompanying drawing below in conjunction with example.
Description of drawings
Fig. 1 is the circuit diagram that the present invention is based on first modular unit in the cascade connection type current transformer of single-stage power conversion module;
Fig. 2 is the first kind of circuit topological structure figure that the present invention is based on the cascade connection type current transformer of single-stage power conversion module;
Fig. 3 is the circuit diagram that the present invention is based on second modular unit in the cascade connection type current transformer of single-stage power conversion module;
Fig. 4 is the second kind of circuit topological structure figure that the present invention is based on the cascade connection type current transformer of single-stage power conversion module;
Fig. 5 is the circuit diagram that the present invention is based on the 3rd modular unit in the cascade connection type current transformer of single-stage power conversion module;
Fig. 6 is the third circuit topological structure figure that the present invention is based on the cascade connection type current transformer of single-stage power conversion module;
Fig. 7 is the circuit diagram that the present invention is based on four module unit in the cascade connection type current transformer of single-stage power conversion module;
Fig. 8 is the 4th kind of circuit topological structure figure that the present invention is based on the cascade connection type current transformer of single-stage power conversion module;
Fig. 9 is the circuit diagram that the present invention is based on the 5th modular unit in the cascade connection type current transformer of single-stage power conversion module;
Figure 10 is the 5th kind of circuit topological structure figure that the present invention is based on the cascade connection type current transformer of single-stage power conversion module;
Figure 11 is that the present invention adopts the three-phase star that constitutes based on the cascade connection type current transformer of single-stage power conversion module to meet converter topologies figure;
Figure 12 is that the present invention adopts the three-phase corner connection converter topologies figure based on the cascade connection type current transformer formation of single-stage power conversion module;
Figure 13 is that the present invention adopts the three-phase double star that constitutes based on the cascade connection type current transformer of single-stage power conversion module to meet converter topologies figure.
Embodiment
In the example of the cascade connection type current transformer that the present invention is based on the single-stage power conversion module, be the circuit topology that is formed a whole by several power conversion module cascades based on the cascade connection type current transformer of single-stage power conversion module.
See figures.1.and.2, in first kind of cascade connection type current transformer based on the single-stage power conversion module, the first modular unit A comprises that single-phase diode rectifier bridge, switching device and fast recovery diode, boost inductance, isolation high frequency transformer and former limit filter capacitor thereof and output DC hold and load.Main power circuit comprises the first modular unit A of high frequency filter and N cascade, and wherein, N is positive integer.Wherein second of each single-phase diode rectifier bridge ac input end links to each other successively with first ac input end of next single-phase diode rectifier bridge, remaining two ac input ends of the single-phase diode rectifier bridge that cascades up, namely first ac input end of first single-phase diode rectifier bridge is connected through high frequency filter with second ac input end of N single-phase diode rectifier bridge and is inserted AC network.
With reference to Fig. 3 and Fig. 4, in second kind of cascade connection type current transformer based on the single-stage power conversion module, the second modular unit B comprises single-phase diode rectifier bridge, switching device and fast recovery diode, boost inductance, isolation high frequency transformer and former limit filter capacitor thereof and output inductor, output DC appearance and load, main power circuit comprises the second modular unit B of high frequency filter and N cascade, wherein, N is positive integer.Wherein second of each single-phase diode rectifier bridge ac input end links to each other successively with first ac input end of next single-phase diode rectifier bridge, remaining two ac input ends of the single-phase diode rectifier bridge that cascades up, namely first ac input end of first single-phase diode rectifier bridge is connected through high frequency filter with second ac input end of N single-phase diode rectifier bridge and is inserted AC network.
With reference to Fig. 5 and Fig. 6, in the third cascade connection type current transformer based on the single-stage power conversion module, the 3rd modular unit C comprises that single-phase diode rectifier bridge, switching device and fast recovery diode, boost inductance, isolation high frequency transformer and former limit filter capacitor thereof, former limit auxiliary induction and output DC hold and load, main power circuit comprises the 3rd modular unit C of high frequency filter and N cascade, wherein, N is positive integer.Wherein second of each single-phase diode rectifier bridge ac input end links to each other successively with first ac input end of next single-phase diode rectifier bridge, remaining two ac input ends of the single-phase diode rectifier bridge that cascades up, namely first ac input end of first single-phase diode rectifier bridge is connected through high frequency filter with second ac input end of N single-phase diode rectifier bridge and is inserted AC network.
With reference to Fig. 7 and Fig. 8, in the 4th kind of cascade connection type current transformer based on the single-stage power conversion module, the four module cells D comprises a single-phase diode rectifier bridge, a H bridge that is constituted by switching device, fast recovery diode, boost inductance, isolate high frequency transformer and former limit filter capacitor and output inductor, output DC holds and load, wherein, diode rectifier bridge direct current outlet side exchanges side through two parallel diodes and links to each other with the H bridge of being made of the full-control type device, H bridge DC side parallel one storage capacitor, the H bridge exchanges the side output and is connected to and isolates the former limit of high frequency transformer, isolates the output of high frequency transformer secondary and holds with output DC behind diode full-wave rectifying circuit and output inductor and link to each other with load.Main power circuit comprises the four module cells D of high frequency filter and N cascade, and wherein, N is positive integer.Wherein second of each single-phase diode rectifier bridge ac input end links to each other successively with first ac input end of next single-phase diode rectifier bridge, remaining two ac input ends of the single-phase diode rectifier bridge that cascades up, namely first ac input end of first single-phase diode rectifier bridge is connected through high frequency filter with second ac input end of N single-phase diode rectifier bridge and is inserted AC network.
With reference to Fig. 9 and Figure 10, in the 5th kind of cascade connection type current transformer based on the single-stage power conversion module, the 5th modular unit E comprises two single-phase diode rectifier bridges, H bridge, fast recovery diode, boost inductance, isolation high frequency transformer and former limit filter capacitor thereof and inductance and output DC appearance and a load that is made of switching device, main power circuit comprises the 5th modular unit E of high frequency filter and N cascade, wherein, N is positive integer.Wherein second ac input end of the single-phase diode rectifier bridge on each former limit of transformer links to each other successively with first ac input end of the single-phase diode rectifier bridge on the former limit of next transformer, remaining two ac input ends of the single-phase diode rectifier bridge on the former limit of transformer that cascades up, namely first ac input end of the single-phase diode rectifier bridge on first former limit of transformer is connected through high frequency filter with second ac input end of the single-phase diode rectifier bridge on N the former limit of transformer and is inserted AC network.
With reference to Figure 11, the three-phase star that the present invention adopts the above-mentioned cascade connection type current transformer based on the single-stage power conversion module to constitute connects converter topologies, comprise constituting the three-phase master power circuit that star connects current transformer, three-phase master power circuit comprises three high frequency filters and three cascade connection type current transformers based on the single-stage power conversion module.Wherein based on totally six of the remaining ac input ends of the modular unit of N cascade in the cascade connection type current transformer of single-stage power conversion module, N is positive integer.Three ac input ends that are positioned at every phase constitute a winding line end, and in addition three ac input ends that are positioned at every phase constitute another winding line end.Wherein a winding line end is received on the public neutral point, and another winding line end is connected with one of three high frequency filters respectively and inserted three phase network, constitutes Y-connection.
With reference to Figure 12, the three-phase corner connection converter topologies that the present invention adopts the above-mentioned cascade connection type current transformer based on the single-stage power conversion module to constitute, comprise the three-phase master power circuit that constitutes the corner connection current transformer, three-phase master power circuit comprises three high frequency filters and three cascade connection type current transformers based on the single-stage power conversion module.Wherein based on totally six of the remaining ac input ends of the modular unit of N cascade in the cascade connection type current transformer of single-stage power conversion module, N is positive integer.Three ac input ends that are positioned at every phase constitute a winding line end, and in addition three ac input ends that are positioned at every phase constitute another winding line end.Wherein a winding line end is received on the public neutral point, and another winding line end is connected to next the phase input in the three phase network successively, constitutes dihedral and connects.
With reference to Figure 13, the three-phase double star that the present invention adopts the above-mentioned cascade connection type current transformer based on the single-stage power conversion module to constitute connects converter topologies, comprise constituting the three-phase master power circuit that double star connects current transformer, three-phase master power circuit comprises three high frequency filters, six brachium pontis inductance and six cascade connection type current transformers based on the single-stage power conversion module.Six two groups of Y-connections that constitute butt joint based on the cascade connection type current transformer of single-stage power conversion module, namely in every group of Y-connection, based on totally six of the remaining ac input ends of the modular unit of N cascade in the cascade connection type current transformer of single-stage power conversion module, N is positive integer.Three ac input ends that are positioned at every phase constitute a winding line end, and in addition three ac input ends that are positioned at every phase constitute another winding line end.One winding line end is received on the public neutral point, another winding line end links to each other with an end of one of brachium pontis inductance respectively, and the other end that is positioned at two described brachium pontis inductance on every phase brachium pontis docks mutually, and is connected to the three phase network input through one of three high frequency filters respectively.Simultaneously, the common neutral in first group of Y-connection links to each other with the two ends of dc capacitor respectively with the common neutral in second group of Y-connection, constitutes double star and connects.
Described cascade connection type current transformer application circuit based on the single-stage power conversion module, can simplify the circuit topological structure of the electronic power convertor that is applied to large-power occasions, can improve the operating efficiency of system by suitable control strategy, have important use in applications such as high-power electric and electronic transformer, high-power mesohigh ac-dc-ac frequency converters and be worth.
Example recited above only is that preferred implementation of the present invention is described; be not that the spirit and scope of the present invention are limited; do not breaking away under the design prerequisite of the present invention; common engineers and technicians make technical scheme of the present invention in this area various modification and improvement; all should fall into protection scope of the present invention; the technology contents that the present invention asks for protection all is documented in claims.
Claims (8)
1. cascade connection type current transformer based on the single-stage power conversion module, comprise main power circuit, described main power circuit comprises the single-stage power conversion module, described single-stage power conversion module adopts first modular unit (A), described first modular unit (A) comprises the single-phase diode rectifier bridge, switching device, fast recovery diode, boost inductance, isolating high frequency transformer and former limit filter capacitor and output DC holds and load, it is characterized in that: described main power circuit comprises described first modular unit (A) of high frequency filter and N cascade, wherein second of each described single-phase diode rectifier bridge ac input end links to each other successively with first ac input end of the described single-phase diode rectifier bridge of the next one, remaining two ac input ends of the described single-phase diode rectifier bridge that cascades up, be that second ac input end of first ac input end and N described single-phase diode rectifier bridge of first described single-phase diode rectifier bridge is through the described high frequency filter access AC network of connect, wherein, N is positive integer.
2. the cascade connection type current transformer based on the single-stage power conversion module according to claim 1, it is characterized in that: wherein said single-stage power conversion module is replaced and is adopted second modular unit (B), described second modular unit (B) to comprise single-phase diode rectifier bridge, switching device and fast recovery diode, boost inductance, isolation high frequency transformer and former limit filter capacitor thereof and output inductor, output DC appearance and load.
3. the cascade connection type current transformer based on the single-stage power conversion module according to claim 1, it is characterized in that: wherein said single-stage power conversion module is replaced and is adopted the 3rd modular unit (C), described the 3rd modular unit (C) to comprise that single-phase diode rectifier bridge, switching device and fast recovery diode, boost inductance, isolation high frequency transformer and former limit filter capacitor thereof, auxiliary induction and output DC hold and load.
4. the cascade connection type current transformer based on the single-stage power conversion module according to claim 1, it is characterized in that: wherein said single-stage power conversion module is replaced and is adopted four module unit (D), described four module unit (D) comprises a single-phase diode rectifier bridge, a H bridge that is constituted by switching device, fast recovery diode, boost inductance, isolate high frequency transformer and former limit filter capacitor and output inductor, output DC holds and load, wherein, diode rectifier bridge direct current outlet side exchanges side through two parallel diodes and links to each other with the H bridge of being made of the full-control type device, H bridge DC side parallel one storage capacitor, the H bridge exchanges the side output and is connected to and isolates the former limit of high frequency transformer, isolates the output of high frequency transformer secondary and holds with output DC behind diode full-wave rectifying circuit and output inductor and link to each other with load.
5. the cascade connection type current transformer based on the single-stage power conversion module according to claim 1, it is characterized in that: wherein said single-stage power conversion module is replaced and is adopted the 5th modular unit (E), described the 5th modular unit (E) to comprise two single-phase diode rectifier bridges, H bridge, fast recovery diode, boost inductance, isolation high frequency transformer and former limit filter capacitor thereof and inductance and output DC appearance and a load that is made of switching device.
6. arbitrary described three-phase star that constitutes based on the cascade connection type current transformer of single-stage power conversion module connects converter topologies among the employing claim 1-5, comprise and constitute the three-phase master power circuit that star connects current transformer, it is characterized in that: described three-phase master power circuit comprises three high frequency filters and three described cascade connection type current transformers based on the single-stage power conversion module, wherein said based on totally six of the remaining ac input ends of the modular unit of N cascade in the cascade connection type current transformer of single-stage power conversion module, N is positive integer, three ac input ends that are positioned at every phase constitute a winding line end, and three ac input ends in addition that are positioned at every phase constitute another winding line end, wherein a winding line end is received on the public neutral point, another winding line end is connected with one of three high frequency filters respectively and is inserted three phase network, constitutes Y-connection.
7. adopt arbitrary described three-phase corner connection converter topologies that constitutes based on the cascade connection type current transformer of single-stage power conversion module among the claim 1-5, comprise the three-phase master power circuit that constitutes the corner connection current transformer, it is characterized in that: described three-phase master power circuit comprises three high frequency filters and three described cascade connection type current transformers based on the single-stage power conversion module, wherein said based on totally six of the remaining ac input ends of the modular unit of N cascade in the cascade connection type current transformer of single-stage power conversion module, N is positive integer, three ac input ends that are positioned at every phase constitute a winding line end, and three ac input ends in addition that are positioned at every phase constitute another winding line end, wherein a winding line end is received on the public neutral point, another winding line end is connected to next the phase input in the three phase network successively, constitutes dihedral and connects.
8. arbitrary described three-phase double star that constitutes based on the cascade connection type current transformer of single-stage power conversion module connects converter topologies among the employing claim 1-5, comprise and constitute the three-phase master power circuit that double star connects current transformer, described three-phase master power circuit comprises three high frequency filters, six brachium pontis inductance and dc capacitor, it is characterized in that: described three-phase master power circuit also comprises six described cascade connection type current transformers based on the single-stage power conversion module, six two groups of Y-connections that constitute butt joint based on the cascade connection type current transformer of single-stage power conversion module, namely in every group of Y-connection, described based on totally six of the remaining ac input ends of the modular unit of N cascade in the cascade connection type current transformer of single-stage power conversion module, N is positive integer, three described ac input ends that are positioned at every phase constitute a winding line end, and three the described ac input ends in addition that are positioned at every phase constitute another winding line end, a described winding line end is received on the public neutral point, described another winding line end links to each other with an end of one of described brachium pontis inductance respectively, and the other end that is positioned at two described brachium pontis inductance on every phase brachium pontis docks mutually, and be connected to the three phase network input through one of three described high frequency filters respectively, simultaneously, common neutral in first group of Y-connection links to each other with the two ends of described dc capacitor respectively with the common neutral in second group of Y-connection, constitutes double star and connects.
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| CN2013100146615 | 2013-01-15 | ||
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|---|---|---|---|---|
| CN109962496A (en) * | 2019-03-11 | 2019-07-02 | 浙江大学 | A kind of marine wind electric field integrated topological design method based on D.C. high voltage transmission |
| CN110007214A (en) * | 2019-04-25 | 2019-07-12 | 中国电子科技集团公司第四十三研究所 | A kind of pulse width modulation amplifier ageing process energy recycling system |
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| CN105720840B (en) * | 2015-06-24 | 2019-06-18 | 中兴通讯股份有限公司 | Power conversion unit and its setting method |
| CN108011379A (en) * | 2018-01-25 | 2018-05-08 | 中国矿业大学(北京) | Advanced Static Var Compensator based on single stage shift module level parallel-type inverter |
| FI128052B (en) * | 2018-04-16 | 2019-08-30 | Lappeenrannan Teknillinen Yliopisto | A power converter for a bioelectrochemical system |
| CN109256966B (en) * | 2018-10-18 | 2021-02-02 | 矽力杰半导体技术(杭州)有限公司 | AC-DC power converter |
| CN109768715B (en) * | 2019-02-13 | 2024-03-19 | 襄阳九鼎昊天环保设备有限公司 | 220kV ultrahigh-voltage electrostatic dust collection power supply |
| CN113014123B (en) * | 2021-04-02 | 2023-06-06 | 湖北春田电工技术有限公司 | High-power multi-output adjustable voltage-stabilizing direct-current power supply |
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Cited By (2)
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| CN109962496A (en) * | 2019-03-11 | 2019-07-02 | 浙江大学 | A kind of marine wind electric field integrated topological design method based on D.C. high voltage transmission |
| CN110007214A (en) * | 2019-04-25 | 2019-07-12 | 中国电子科技集团公司第四十三研究所 | A kind of pulse width modulation amplifier ageing process energy recycling system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103051219A (en) | 2013-04-17 |
| CN103280984B (en) | 2017-03-15 |
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